ONT

Ontario California Airport (ONT) departures today

live · 52m ago

Ontario California Airport (ONT) delays today: 80% of the 60 flights we have timed operated within 15 minutes of schedule. Departures are running +9 min, across 62 flights tracked so far today. The busiest departure hour on today's board is 06:00 local, with 14 flights scheduled to leave. The most-served destination today is Denver (DEN), with 7 departures on the board. Source: official airport boards, METAR weather, Pro Flight Search tracking. Updated 26 October 2026 at 17:18 UTC.

DEPARTURES MINOR DELAYS
+9 min

typical departure delay right now

Departures +9 min, arrivals 4 min early. This airport's board does not publish cancellations.

Live arrivals · Delays & weather · Direct routes · Global delays now

Cancellation risk · Do planes make up time? · Weather delay risk

JUST DEPARTEDAS 2605 to CVG · +15 min

Live departures board

est. departure
10:35 WN 3272to OAK on time
Scheduled10:35Estimated10:35Terminal4
Running to plan on the current board.
11:00 WN 3280to SJC on time
Scheduled11:00Estimated11:00Terminal4
Running to plan on the current board.
11:09NOW
11:13 AS 475to SEA on time
Scheduled11:13Estimated11:13Terminal2
Running to plan on the current board.
11:29 AS 2082to PDX on time
Scheduled11:29Estimated11:29Terminal2
Running to plan on the current board.
11:52 F9 2908to DEN on time
Scheduled11:52Estimated11:52
Running to plan on the current board.
11:56 DL 4070to SEA on time
Scheduled11:56Estimated11:56Terminal2
Running to plan on the current board.
12:00 WN 1274to SMF on time
Scheduled12:00Estimated12:00Terminal4
Running to plan on the current board.
12:00 WN 3259to AUS on time
Scheduled12:00Estimated12:00Terminal4
Running to plan on the current board.
12:01 F9 1159to SFO on time
Scheduled12:01Estimated12:01
Running to plan on the current board.
12:16 DL 665to ATL on time
Scheduled12:16Estimated12:16Terminal2
Running to plan on the current board.
12:40 WN 3291to DEN on time
Scheduled12:40Estimated12:40Terminal4
Running to plan on the current board.
12:43 AA 2956to DFW on time
Scheduled12:43Estimated12:43Terminal4
Running to plan on the current board.
12:45 PCM 7683to SMX on time
Scheduled12:45Estimated12:45
Running to plan on the current board.
12:48 1I 425to SFO on time
Scheduled12:48Estimated12:48
Running to plan on the current board.
13:05 AA 2661to PHX on time
Scheduled13:05Estimated13:05Terminal4
Running to plan on the current board.

Board fetched 52m ago · how we report

1departed
last hour
7departing
next hour
0delayed
15+ min
0cancelled
on board

Runway demand · next 3 h

11:0912:3914:04

Scheduled departures per 15 minutes. The tallest banks are where queues form.

Trouble downstream

next 2½ h destinations
DENDEN3 outboundon timeSFOSFO3 outboundon timeSEASEA2 outboundno dataPDXPDX1 outboundno data

Delay at the destination often ripples back into departure holds here.

Where Ontario California Airport (ONT) departures fly

DENDenver7 flights
PHXPhoenix5 flights
SFOSan Francisco5 flights
SEASeattle5 flights
LASLas Vegas4 flights
DFWDallas-Fort Worth4 flights
SMFSacramento4 flights
IAHHouston3 flights

Destinations on the current board, busiest first. 26 airports are served in this departures window.

Busiest departure hours at Ontario California Airport (ONT)

00:0012:0023:00

The busiest departure hour on today's board is 06:00 local, with 14 flights scheduled to leave.

When this board says…

posted +15
+24
posted +30
+36
posted +45
+55
posted +60
+77
board's first estimatemedian actual

Every board update is stored, including the revisions. The first delay this board admits understates the median outcome. Posted vs. actual across every hub: the slippage study →

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: Ontario California Airport (ONT) live delay and board tracking, measured from official airport boards.

Canonical URL
https://proflightsearch.com/airport-departures/ontario-ONT
How we measure this →

Ontario California Airport (ONT) departures: common questions

How delayed are Ontario California Airport (ONT) departures right now?

Ontario California Airport (ONT) delays today: 80% of the 60 flights we have timed operated within 15 minutes of schedule. Departures are running +9 min, across 62 flights tracked so far today.

How many flights are cancelled at Ontario California Airport (ONT) today?

No cancellations are showing across the 62 flights currently on the board.

What is the busiest departure hour at Ontario California Airport (ONT)?

The busiest departure hour on today's board is 06:00 local, with 14 flights scheduled to leave.

Where do Ontario California Airport (ONT) departures fly?

The busiest destinations on the current board are Denver (DEN), Phoenix (PHX), San Francisco (SFO), Seattle (SEA), Las Vegas (LAS). In total 26 airports are served in this window.